London's mayor, Sadiq Khan, said in a statement Thursday that Trump's original tweets had betrayed the "special relationship" between the two countries.
"President Trump yesterday use Twitter to promote a vile, extremist group that exists solely to sow division and hatred in our country," said Khan.
The mayor then called on May to cancel any plans to receive Trump on an official visit.
"As the mayor of this great diverse city, I have previously called on Theresa May to cancel her ill-judged offer of a state visit to President Trump.
Though the sentiment is not new, it comes after Trump retweeted an anti-muslim video posted by a British fascist group, drawing condemnation from Prime Minister Theresa May and even some of Trump's own supporters.
